InChI=1S/C16H18O9S/c1-24-16-3-2-9(5-15(16)20)4-11(25-26(21,22)23)8-12-13(18)6-10(17)7-14(12)19/h2-3,5-7,11,17-20H,4,8H2,1H3,(H,21,22,23)